# LM2940IMPX-10

**Texas Instruments** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223-4

LM2940IMPX-10 from Texas Instruments, in a SOT-223-4. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | IN | power_in | Unregulated input voltage, operating range 6 V to 26 V. |
| 2 | GND | power_in | Ground. |
| 3 | OUT | power_out | Regulated output voltage; requires an output capacitor of at least 22 µF to maintain stability. |
| 4 | GND | power_in | Ground (tab). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-223-4 |
| Category | Power Management (PMIC) |
| Pins | 4 |

## CAD (KiCad official)

- Symbol: `LM2940IMPX-10`
- Footprint: `Package_TO_SOT_SMD:SOT-223`
- 3D model: SOT-223-4 (KiCad packages3D, STEP)
- 3D model files: `lm2940impx-10-etched.step` / `lm2940impx-10-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm2940impx-10.step` / `lm2940impx-10.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/lm2940-n) (46 pp, sha256 `54cf633a44bf4545`, retrieved 2026-10-06, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/lm2940impx-10-datasheet.pdf)